From: Jules Jacobs <devlists-ruby-talk@...>
Date: 2006-03-11T18:20:45+09:00
Subject: Re: named method arguments with defaults

You can use merge:

def a_method(*options)
  options = {:size => 45, :length => 12}.merge(options)

  # do stuff
end

a_method(:size => 44)

*should* work.

On Saturday, March 11, 2006, at 4:48 PM,  wrote:
>Hello all,
>
>What is the current idiomatic approach to pass named arguments to a
>method in Ruby ?
>
>In Perl, I can do:
>
>sub method
>{
>  # first the defaults are specified, then @_ is appended and overrides
>  # the defaults, using Perl's array-folding-into-hash feature
>  #
>  my %args = ("size" => 45,
>                      "length" => 12,
>                      @_);
>
>  my $the_size = $args{"size"};
>}
>
># now, a call: 44 will override the default size 45, but length will
>remain 12
>#
>method("size" => 44);
>
>I'm sure Ruby has a nearly similar approach to achieve this, I just not
>skilled enough (yet) to know how. Please advise.
>
>Thanks in advance
>Eli
>
>


Jules


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